In early 2025, the Lunar New Year film season witnessed the failure of the film "Love by mistake for a best friend". This film is said to have lost to two strong competitors, The Four Guardians by Tran Thanh and The billion-dollar kiss directed by Thu Trang for the first time.
Love by mistake for a best friend has the production investment of Kaity Nguyen. The actress spent money to produce and participate in acting. However, "Love by mistake for a best friend" left theaters with only 21 billion VND in revenue, being left far behind by "The Four Guardians" (more than 300 billion VND) and "The billion-dollar kiss" (more than 200 billion VND).
The 21 billion VND in revenue after being divided among film distributors (usually at a ratio of 50-50), the remaining amount is considered a huge loss. The production cost for a film project currently ranges (average) from 20 to 30 billion VND. "Love by mistake for a best friend" is an investment project, set to film at many famous tourist destinations.
After the failure of Love by mistake for a best friend, the audience was surprised to see the three main actors of the film, Kaity Nguyen, Thanh Son, Tran Ngoc Vang, appear fully in The dead in the air.
In it, Thanh Son plays the male lead of Binh bodyguard, Kaity Nguyen as flight attendant Trinh - the wife of the vice-captain (played by Tran Ngoc Vang).
Kaity Nguyen continues to contribute capital and invest in production money for The War in the Air.
When asked about the losses in the project "Love by mistake for a best friend" and the reason for continuing to contribute money to invest in "The War in the Air", Kaity Nguyen said: "Investing in theatrical film projects is always risky. No one is sure that this film will win, that film will lose. Audience tastes are unpredictable. I am a professional, pursuing work on a long journey. I can't stop all my work because of a lost project. Life goes on, work goes on. "We put this glue in another glue". I didn't think much, seeing that the script for "The War in the Air" was very attractive, I contributed my investment."
Currently, as of the afternoon of October 5, the film "The War in the Air" has exceeded its revenue by more than 200 billion VND. With this revenue, the film has a big profit, and is also in the top highest-grossing films of 2025.
Thanh Son, Kaity Nguyen, Tran Ngoc Vang had a " revenge" at the box office after "Love by mistake for a best friend". In The War in the Air, Tran Ngoc Vang played the role well, Kaity Nguyen acted with impressive emotional expressions, especially Thanh Son had an impressive performance with realistic close-range actions, emotional eye acting. Thanh Son broke the "one-color" prejudice with a breakthrough transformation on the big screen through the role of Binh of "The Death in the Air".
